<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=EUC-KR">
<title>Insert title here</title>
</head>
<body>
<script src="http://code.jquery.com/jquery-2.0.3.js"></script>
<script src="ajax.js"></script>

<script>

var test = function() {
	
};

test.prototype = {
		va : 120
};

$(function() {
	var a = new test();
	var b = new test();
	
	a.va = 150;
	
	alert(a.va);
	alert(b.va);
});
</script>
</body>
</html>